CN214887574U

CN214887574U - Jigger device of reciprocating piston compressor

Info

Publication number: CN214887574U
Application number: CN202121026610.0U
Authority: CN
Inventors: 石中玉; 徐明照; 窦春; 张明珠; 孙田青
Original assignee: Shanghai Dalong Machinery Factory Co ltd
Current assignee: Shanghai Dalong Machinery Factory Co ltd
Priority date: 2021-05-14
Filing date: 2021-05-14
Publication date: 2021-11-26
Anticipated expiration: 2031-05-14

Abstract

A jigger device of a reciprocating piston compressor comprises a crankcase, a crankshaft and an oil injection pump; the barring device comprises a shell, a power mechanism, a first transmission mechanism, a second transmission mechanism, a barring gear, a driving gear, a power input gear and a moving mechanism. The shell of the barring gear is connected with the crankcase, and the power mechanism is in transmission connection with the barring gear through the first transmission mechanism. The driving gear is mounted on the crankshaft, the moving mechanism is used for driving the turning gear to move between a turning position and a disengagement position, the turning gear is meshed with the driving gear in the turning position, and the turning gear is disengaged from the driving gear in the disengagement position. The oil injection pump is arranged on a shell of the barring gear; the power input gear is meshed with the driving gear and is in transmission connection with a power input shaft of the oil injection pump through a second transmission mechanism. The utility model discloses can reduce the manufacturing and the running cost of compressor, improve the safety in utilization of compressor.

Description

Jigger device of reciprocating piston compressor

Technical Field

The utility model relates to a compressor technology especially relates to a barring gear for reciprocating piston compressor.

Background

The reciprocating piston type compressor is a compressor which realizes the pressurization and the delivery of gas by making the volume of a cylinder body change periodically through the reciprocating motion of a piston in a cylinder. Whether the compressor can normal operating need be tested at installation and debugging in-process to the compressor, will let moving part move to convenient suitable position and carry out the dismouting at the maintenance in-process, these all need rely on the barring gear to realize.

The existing barring gear is arranged at the rear end of a crankcase of a compressor (namely, one end close to a crankshaft driving motor), and a pinion is driven by a barring motor to be meshed with a flywheel gearwheel for barring. This construction requires machining of the gear on the flywheel, which results in higher machining costs due to the larger diameter of the flywheel. In addition, in the existing reciprocating piston compressor, an oil injection pump for injecting lubricating oil into a bearing bush of a crankshaft is driven by an independent external motor, so that the power consumption is high, and the operation cost is high. In addition, once the external motor stops working due to damage and other reasons, the oil injection pump also stops working, and the crankshaft is still in a working state at the moment, so that the damage of the crankshaft bearing bush is easily caused under the condition, and the use safety of the compressor is influenced.

Disclosure of Invention

The utility model aims to solve the technical problem that a barring gear of reciprocating piston compressor is provided, its manufacturing and the running cost that can reduce the compressor improve the safety in utilization of compressor.

The embodiment of the utility model provides a barring gear of a reciprocating piston compressor, wherein the reciprocating piston compressor comprises a crankcase, a crankshaft and an oil injection pump; the barring device comprises a shell, a power mechanism, a first transmission mechanism, a barring gear, a driving gear and a moving mechanism; the shell of the barring gear is connected with the crankcase, the power mechanism is in transmission connection with a barring gear through a first transmission mechanism, the driving gear is installed on the crankshaft, the moving mechanism is used for driving the barring gear to move between a barring position and a disengagement position, the barring gear is meshed with the driving gear when in the barring position, and the barring gear is disengaged from the driving gear when in the disengagement position; the turning gear is characterized by comprising a power input gear and a second transmission mechanism; and the power input gear is meshed with the driving gear and is in transmission connection with a power input shaft of the oil injection pump through the second transmission mechanism.

In the barring gear of the reciprocating piston compressor, the driving gear is mounted at the front end of the crankshaft, and the flywheel is mounted at the rear end of the crankshaft; the shell of the barring gear is connected with the front end of the crankcase.

The utility model discloses include following advantage and characteristics at least:

1. the driving gear arranged on the crankshaft of the barring gear is in transmission connection with the power input shaft of the oil injection pump through the second transmission mechanism, so that synchronous operation of the oil injection pump and the crankshaft is guaranteed, the condition that the oil injection pump stops working when the crankshaft normally works due to factors such as external motor faults in the prior art is avoided, and the use safety of a compressor is improved;

2. the barring gear of the embodiment of the utility model can drive the oil injection pump to operate by the energy of the main motor of the compressor, thereby reducing the power consumption and the operation cost of the compressor;

3. compared with the prior art, the utility model discloses barring gear sets up at compressor fuselage front end, at the front end installation drive gear of bent axle, need not to process the gear on the flywheel that is located the bent axle rear end to the manufacturing cost of compressor has been reduced.

Drawings

Fig. 1 shows an overall schematic plan view of a reciprocating piston compressor employing a barring gear according to an embodiment of the present invention.

Fig. 2 shows a schematic view of a crankshaft of a reciprocating piston compressor employing a barring device according to an embodiment of the present invention.

Fig. 3 and 4 show schematic structural diagrams of a barring gear of a reciprocating piston compressor according to an embodiment of the present invention from two directions perpendicular to each other, respectively.

Fig. 5 shows a schematic view of a handle and a travel switch of a barring gear according to an embodiment of the present invention.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

Fig. 1 shows an overall schematic plan view of a reciprocating piston compressor employing a barring gear according to an embodiment of the present invention. Fig. 2 shows a schematic view of a crankshaft of a reciprocating piston compressor employing a barring device according to an embodiment of the present invention. Referring to fig. 1 and 2, the reciprocating piston compressor includes a crankcase 1, a crankshaft 2, a fuel injection pump 3, and a barring gear 4. Alternatively, the filling pump 3 is a gear pump.

Fig. 3 and 4 show schematic structural diagrams of a barring gear of a reciprocating piston compressor according to an embodiment of the present invention from two directions perpendicular to each other, respectively. Fig. 5 shows a schematic view of a handle and a travel switch of a barring gear according to an embodiment of the present invention. Referring to fig. 3 to 5, the barring device 4 of the reciprocating piston compressor according to an embodiment of the present invention includes a housing 40, a power mechanism 41, a first transmission mechanism, a second transmission mechanism, a barring gear 44, a driving gear 45, a moving mechanism, a power input gear 47, and a control mechanism.

The housing 40 of the barring gear is connected to the crankcase 1. The power mechanism 41 is in transmission connection with the turning gear through a first transmission mechanism so as to drive the turning gear to rotate. In the present embodiment, the power mechanism 41 is a motor. The first transmission mechanism includes a worm 421, a worm wheel 422, and a rotation shaft 423. The worm 421 is in transmission connection with a power mechanism, and the worm wheel 422 is mounted on the rotating shaft 423 and meshed with the worm 421.

The turning gear 44 is axially slidably mounted to the rotating shaft 423 and is rotatable synchronously with the rotating shaft 423. Alternatively, the worm gear 422 is splined to the rotating shaft 423, and the turning gear 44 is splined to the rotating shaft 423.

The drive gear 45 is mounted to the crankshaft 2. In the present embodiment, the drive gear 45 is attached to the front end of the crankshaft 2, and the flywheel 5 is attached to the rear end of the crankshaft 2. The housing 40 of the barring gear is connected to the front end of the crankcase 1.

The moving mechanism is used for driving the turning gear 44 to move between a turning position and a disengagement position, the turning gear 44 is meshed with the driving gear 45 in the turning position, and the turning gear 44 is disengaged from the driving gear 45 in the disengagement position. In the present embodiment, the moving mechanism includes a rotating shaft 461, a fork 462, and a handle 463. The rotating shaft 461 is rotatably installed to the housing 40 of the turning gear 4, one end of the shift fork 462 is connected to one end of the rotating shaft 461, the other end of the shift fork 462 is connected to the turning gear 44, and the handle 463 is connected to the other end of the rotating shaft 461.

The oiling pump 3 is mounted to a housing 40 of the turning gear; the power input gear 47 is meshed with the driving gear 45 and is in transmission connection with the power input shaft 31 of the oil filling pump 3 through a second transmission mechanism. The second transmission mechanism includes a transmission shaft 431, a bearing 432, and a bearing housing 433. The support sleeve 433 is fixed to the housing 40 of the barring gear and passes through a housing wall of the housing 40. The bearing 432 is installed in the support sleeve 433 and sleeved outside the transmission shaft 431. One end of the transmission shaft 431 is connected with the power input shaft 31 of the oil filling pump 3, and the power input gear 47 is installed at the other end of the transmission shaft 431 and can drive the transmission shaft 431 to rotate synchronously. In the present embodiment, the number of bearings 432 is two.

The control mechanism is configured to allow a power source (not shown) to supply power to the power mechanism 41 when the turning gear 44 is in the turning position, and to cut off the power supply to the power mechanism 41 when the turning gear 44 is in the disengaged position. In the present embodiment, the control mechanism includes a stroke switch 48, and the stroke switch 48 is mounted to the crankcase 1 and provided on a path through which the power source supplies power to the power mechanism 41. The handle 463 contacts the travel switch 48 during rotation to cut off power from the power mechanism 41.

When the turning is required, the handle 463 is pulled up, the shift fork 462 shifts the turning gear 44 to a position where it is engaged with the drive gear 45 on the crankshaft 2, that is, a turning position, the stroke switch 48 is energized, the motor 41 is operated, and the worm 421 is driven to rotate. The worm wheel 422 rotates with the worm 421 and drives the rotation shaft 423, the turning gear 44 and the power input gear 47 to rotate, so that the crankshaft 2 of the compressor runs at a constant slow speed, the oil injection pump 3 operates, and lubricating oil is injected into the bearing bush of the crankshaft 2. After the barring is finished, the handle 463 is pulled down, the handle 463 touches the travel switch 48, the motor 41 is powered off, and the fork 462 pulls the barring gear 44 away, so that the barring gear 44 moves to the disengagement position.

When the main motor 6 drives the crankshaft 2 to rotate and the compressor normally works, the driving gear 45 on the crankshaft 2 can drive the oil injection pump 3 to operate through the second transmission mechanism, so that the synchronous operation of the oil injection pump 3 and the crankshaft 2 is ensured, the condition that the oil injection pump stops working when the crankshaft normally works due to factors such as external motor faults in the prior art is avoided, and the use safety of the compressor is improved.

Claims

1. A barring gear of a reciprocating piston compressor, the reciprocating piston compressor comprising a crankcase, a crankshaft and an oil injection pump; the barring device comprises a shell, a power mechanism, a first transmission mechanism, a barring gear, a driving gear and a moving mechanism; the shell of the barring device is connected with the crankcase, the power mechanism is in transmission connection with the barring gear through the first transmission mechanism, the driving gear is mounted on the crankshaft, the moving mechanism is used for driving the barring gear to move between a barring position and a disengagement position, the barring gear is meshed with the driving gear in the barring position, and the barring gear is disengaged from the driving gear in the disengagement position; the turning gear is characterized by comprising a power input gear and a second transmission mechanism; and the power input gear is meshed with the driving gear and is in transmission connection with a power input shaft of the oil injection pump through the second transmission mechanism.

2. The barring gear of a reciprocating piston compressor according to claim 1 wherein the second transmission comprises a transmission shaft, a bearing and a bearing bush; the supporting sleeve is fixed on a shell of the barring gear and penetrates through a shell wall of the shell; the bearing is arranged in the supporting sleeve and sleeved outside the transmission shaft; one end of the transmission shaft is connected with a power input shaft of the oil injection pump, and the power input gear is installed at the other end of the transmission shaft and can drive the transmission shaft to rotate synchronously.

3. The barring gear of a reciprocating piston compressor according to claim 1 wherein the drive gear is mounted to a front end of the crankshaft and a rear end of the crankshaft is mounted with a flywheel;

the shell of the barring gear is connected with the front end of the crankcase.

4. The barring device of a reciprocating piston compressor according to claim 1 wherein the first transmission comprises a worm, a worm wheel and a shaft; the worm is in transmission connection with the power mechanism, and the worm wheel is mounted on the rotating shaft and meshed with the worm;

the turning gear is arranged on the rotating shaft in an axial sliding mode and can rotate synchronously along with the rotating shaft.

5. The barring gear of a reciprocating piston compressor as claimed in claim 4 wherein the barring gear is splined to the shaft.

6. Barring gear for reciprocating piston compressors according to claim 1 or 4, characterized in that the power mechanism is an electric motor.

7. The barring device for a reciprocating piston compressor according to claim 1 wherein the barring device comprises a control mechanism for allowing power to power the power mechanism when the barring gear is in the barring position and cutting power to the power mechanism when the barring gear is in the disengaged position.

8. The barring device of a reciprocating piston compressor according to claim 1 wherein the moving mechanism includes a rotating shaft, a fork and a handle; the rotating shaft is rotatably installed on a shell of the turning gear, one end of the shifting fork is connected with one end of the rotating shaft, the other end of the shifting fork is connected with the turning gear, and the handle is connected with the other end of the rotating shaft.

9. The barring gear of a reciprocating piston compressor as claimed in claim 8 wherein the barring gear includes a travel switch mounted to the crankcase and disposed in a path of a power supply supplying power to the power mechanism;

the handle can touch the travel switch in the rotating process so as to cut off the power supply of the power mechanism by the power supply.

10. The barring device of a reciprocating piston compressor according to claim 1 wherein the oil injection pump is mounted to a housing of the barring device.